Chimney-cap.



J. G. ROTHBARTH.

CHIMNEY GAP. APPLICATION FILED r3119, 1910.

Patented Oct. 18,1910.

JOHN C. ROTHBARTH, OF BUFFALO, NEW YORK.

CHIMNEY- CAP.

stares.

Specification of Letters Patent.

Patented Oct. 18, 1910.

Application filed February 19, 1910. Serial No. 544,860.

T 0 all whom it may concern:

Be it known that I, JOHN C. Ro'rHBAR'rH, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Chimney-Caps, of which the following is a specification.

This invention relates to chimney caps or ventilators of that general class shown and described in United States Letters Patent issued to me on the 17th day of December 1907 under N0. 87 1,2429.

The object of the invention is generally to improve and simplify the construction of the cap and to reinforce and strengthen the latter by the provision of spaced tie rods which rest on the top of the chimney and serve to assist in supporting the cap in position thereon.

A further object is to provide a chimney cap including a hood having its opposite ends provided with depending closures, there being guard plates interposed between the closures of the hood and the adjacent ends of the cap, thereby to prevent wind, rain or snow from blowing directly across the top of the chimney.

A further object is to form the lower edges of the cap with a marginal reinforcing flange which serves to prevent the entrance of water to the interior of the chimney at the point of attachment of the cap thereto.

A. still further object of the invention is generally to improve this class of devices so as to increase their utility, durability and efficiency.

Further objects and advantages will appear in the following description, it being understood that various changes in form,

proportions and minor details of construction may be resorted to within the scope of the appended claims.

For a full understanding of the invention and the merits thereof and also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a perspective view of a chimney cap constructed in accordance with my invention; Fig. 2 is a vertical longitudinal sectional view of the same, a portion thereof being broken away; Fig. 3 is a transverse sectional view; Figdisa bottom plan view of one end of the chimney cap.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The improved chimney cap forming the subject matter of the present invention comprises a body portion 5 of substantially rectangular formation, as shown, and preferably constructed from a single sheet of metal, the opposite ends of the body portion being overlapped and rigidly united by rivets or similar fastening devices 6.

The top of the body portion or cap is preferably curved transversely, while the opposite ends thereof are extended longitudinally beyond the end walls 7 to form overhanging hoods 8.

The metal constituting the end of each hood 8 is bent upwardly to produce a marginal flange 9 which receives a correspon ingly flanged end plate or closure 10.

The lower edge of the body portion 5 is bent laterally to form an angularly disposed flange 11 which serves to prevent water from running over the curved top of the cap and entering the chimney at the point of attachment of the cap thereto.

Fastened to the inner walls of the body portion or cap at the opposite longitudinal edges thereof are attaching clips or lugs 12 having their free ends offset at 13 and provided with openings let to permit the insertion of clamping wires or bands 14, which latter engage nails or similar fastening devices driven into the walls of the chimney, as shown.

It will here be noted that the marginal flange 11 of the cap forms a housing and protection for the attaching lugs and also serves to prevent the entrance of water between the lower edge of the flange and the top of the chimney, as before stated.

The metal consituting the upper edges of the end walls 7 is bent laterally within the cap to form oppositely disposed curved flanges 15, spaced from the lower surface of the hood or cover to form openings 16.

interposed between the end walls 7 and end plates 10 are guard plates 17, which latter form partial closures for the openings 16 and which, in conjunction with the end plates 10, serve to prevent wind, rain or snow from blowing directly across the top of the chimney.

The intermediate portions of the guard plates 17 are bowed outwardly to permit the passage of air between the bowed portions thereof and the end walls 7, while the opposite ends of said plates are reduced to form attaching straps 18, which latter extend within the body of the cap and are riveted or otherwise secured thereto, as indicated at 19.

Suitable shoulders 20 are formed at the junction of the bowed portions 17 and attaching straps 18 for engagement with the sections of metal constituting the end walls 7, thus to assist in firmly holding the guard plates in position on the cap.

Extending vertically from the cover or hood 8 at the center of the cap, is a ventilating pipe or tube 21 having its upper end provided with a cap or closure 22 extending either longitudinally or transversely of the body portion 5. The pipe or tube 21 may be attached to either the outside or the inside of the body portion 5.

In the construction of relatively large chimney caps or cowls, the latter are preferably reinforced and strengthened by the provision of spaced transverse tie rods 23, which rest on the top of the chimney and assist in supporting the cap in position thereon, as best shown in Fig. 3 of the drawing. These tie rods however, may be dispensed with, if desired.

It will of course be understood that the caps may be made either oblong or square and fitted to chimneys, flues or ventilating ducts without departing from the spirit of the invention. It will also be understood that the several parts comprising the cap may be soldered, riveted or otherwise united.

Having thus described the invention, what is claimed as new is:

1. A chimney cap comprising a body portion having the upper portions of its end walls cut-away and provided with inwardly extending flanges spaced from the, top of the body portion to form openings, a cover forming a part of the body portion and provided with oppositely disposed hoods overhanging the openings in the ends of said body portion, and guard plates forming partial closures for said openings and housed beneath the hoods.

2. A chimney cap comprising a body portion having the upper portions of its end walls cut-away to form openings, a cover forming a part of the body portion and provided with oppositely disposed hoods overhanging said openings, and guard plates forming partial closures for said openings and spaced from the cover.

3. A chimney cap comprising a body portion having its opposite end walls spaced from the top of said body portion to form intermediate openings, laterally curved guard plates forming partial closures for said openings, a reinforcing flange extending laterally from the lower portion of the cap, and attaching lugs secured to the body portion at said flange for engagement with the chimney, the top of said body portion being extended longitudinally beyond the guard plates to form overhanging hoods.

at. A chimney cap comprising a body portion having a curved top terminating in overhanging hoods, the end walls of the body portion being spaced from the top to form openings and provided with inwardly extending flanges, end plates secured to the hoods, and outwardly extended guard plates interposed between the end walls and the end plates and forming partial closures for the openings in the body portion.

5. A chimney cap comprising a body portion having openings in the end walls thereof and provided with a cover extending longitudinally beyond the end walls to form overhanging hoods, a ventilating tube carried by the cover, a reinforcing flange extending laterally from the bottom of the body portion, guard plates forming partial closures for the openings in the body portion, and attaching lugs secured to the body portion and provided with openings for the reception of fastening devices.

6. A chimney cap comprising a body portion having a curved top, the opposite ends of which are extended longitudinally beyond the end Walls of the body portion to form overhanging hoods, the upper edges of the end walls being spaced from the cover to form openings, laterallycurved guard plates forming partial closures for said openings, and transverse tie rods piercing the side walls of the body portion and adapted to bear against the top of a chimney.

7. A chimney cap comprising a body portion having a curved top, the opposite ends of which are extended longitudinally beyond the end walls of the body portion to form overhanging hoods having depending end plates, the upper ends of said end walls being spaced from the cover to form openings and provided with inwardly extending flanges, laterally curved guard plates interposed between the end plates and end walls and forming partial closures for the openings in the body portion, said guard plates being provided with shoulders adapted to bear against the exterior faces of the end walls and defining attaching straps for en gagement with the interior walls of the body portion, and means for securing the cap in position on a chimney.

8. A chimney cap comprising a body portion having a curved top, the opposite ends of which are extended longitudinally beyond the end walls of the body portion to form overhanging hoods, the metal forming each hood being bent upwardly to produce a flange, end plates having corresponding flanges engaging the flanges on the hoods, the metal constituting the end walls of the body portion being spaced from the top of said body portion to form openings, curved plates interposed between the end walls and end plates and forming partial closures for the openings, attaching lugs depending from the bottom of the body portion, and a reinforcing flange extending laterally from the lower edge of the body portion and forming a housing for the attaching lugs.

9. A chimney cap comprising a substantially rectangular body portion formed of a single piece of metal and having a curved top, the opposite ends of which are extended longitudinally to produce overhanging hoods, the metal at each end of the body portion being cut or severed and pressed inwardly in overlapped relation to form end walls, the upper edges of the metal constituting the end walls being bent inwardly to form flanges spaced from the top of the body portion to form openings, and guard plates having their intermediate portions bowed laterally and their opposite ends secured to the body of the cap, said guard plates forming partial closures in the openings in said body portion.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN G. ROTHBARTH.

lVitnesses:

EDWARD E. LEWIS, GEO. L. KINGSTON. 

